Abstract:
Density, viscosity and ultrasonic velocity have been calculated to the liquid composition of propylene glycol and hexanol at all possible molar fractions at T=303.15K, 313.15K, 323K.In extension, we have estimated the thermo acoustic parameters such as Acoustic impedance (Z), Isentropic compressibility Ks), Free length (Lf), Relaxation time (T), Free volume (Vf), Enthalpy (H), Rao�s constant (R), Wada�s constant (W), Internal pressure (?).The experimental data were fitted into Redlitch-Kister polynomial. The variations of these parameters for the binary mixture is explained in terms of inter molecular interactions, which exist in the mixture. Further Ultrasonic velocities of binary mixture was calculated theoretically by using empirical relations such as Nomoto�s relation (UNOM), Impedance relation (UIMP), Rao�s theory (UR), Junjie�s theory (UJM), Van deal ideal mixing relation (UIMR ). In between theoretical and experimental values of ultrasonic velocity a good agreement has been found.
Author(s): K. Srisanthi, Sk. Suriya Shihab, T.Vishwam, S.Sreehari Sastry